Golang Host.To_json方法代码示例

//.........这里部分代码省略.........
		if plidx >= len(path_list) {
			net_sheep.Baa(0, "CRI: find-path: internal error -- path size > num of links.  [TGUNET006]")
			return
		}

		ssw, _ = h1.Get_switch_port(swidx) // get next switch that lists h1 as attached; we'll work 'out' from it toward h2
		if ssw == nil {                    // no more source switches which h1 thinks it's attached to
			pcount = plidx
			if pcount <= 0 || swidx == 0 {
				net_sheep.Baa(1, "find-path: early exit? no switch/port returned for h1 (%s) at index %d captrip=%v", *h1nm, swidx, lcap_trip)
			}
			path_list = path_list[0:pcount] // slice it down to size
			cap_trip = lcap_trip            // set with overall state
			return
		}

		fence := n.get_fence(usr)
		if ssw.Has_host(h1nm) && ssw.Has_host(h2nm) { // if both hosts are on the same switch, there's no path if they both have the same port (both external to our view)
			p1 := h1.Get_port(ssw)
			p2 := h2.Get_port(ssw)
			if p1 < 0 || p1 != p2 { // when ports differ we'll create/find the vlink between them	(in Tegu-lite port == -128 is legit and will dup)
				m1 := h1.Get_mac()
				m2 := h2.Get_mac()

				lnk = n.find_vlink(*(ssw.Get_id()), p1, p2, m1, m2)
				has_room := true // always room if relaxed mode, so start this way
				if n.relaxed {
					has_room = ssw.Has_capacity_out(commence, conclude, inc_cap, fence.Name, fence.Get_limit_max()) // ensure cap on all outbound links from switch
				}

				if has_room { // room for the reservation
					lnk.Add_lbp(*h1nm)
					net_sheep.Baa(1, "path[%d]: found target on same switch, different ports: %s  %d, %d", plidx, ssw.To_str(), h1.Get_port(ssw), h2.Get_port(ssw))
					path = gizmos.Mk_path(h1, h2) // empty path
					path.Set_bandwidth(inc_cap)
					path.Set_extip(extip, ext_flag)
					path.Add_switch(ssw)
					path.Add_link(lnk)

					path_list[plidx] = path
					plidx++
				} else {
					lcap_trip = true
					net_sheep.Baa(1, "path[%d]: hosts on same switch, virtual link cannot support bandwidth increase of %d", plidx, inc_cap)
				}
			} else { // debugging only
				net_sheep.Baa(2, "find-path: path[%d]: found target (%s) on same switch with same port: %s  %d, %d", plidx, *h2nm, ssw.To_str(), p1, p2)
				net_sheep.Baa(2, "find-path: host1-json= %s", h1.To_json())
				net_sheep.Baa(2, "find-path: host2-json= %s", h2.To_json())
			}
		} else { // usual case, two named hosts and hosts are on different switches
			net_sheep.Baa(1, "path[%d]: searching for path starting from switch: %s", plidx, ssw.To_str())

			for sname := range n.switches { // initialise the network for the walk
				n.switches[sname].Cost = 2147483647 // this should be large enough and allows cost to be int32
				n.switches[sname].Prev = nil
				n.switches[sname].Flags &= ^tegu.SWFL_VISITED
			}

			if n.relaxed {
				if !ssw.Has_capacity_out(commence, conclude, inc_cap, fence.Name, fence.Get_limit_max()) { // we do enforce capacity on ingress switch
					err = fmt.Errorf("ingress switch cannot support additional bandwidth (%d) or user max reached (%d)", inc_cap, fence.Get_limit_max())
					net_sheep.Baa(1, "%s", err)
					lcap_trip = true
				} else {
					dsw, _ := h2.Get_switch_port(swidx) // need the switch associated with the second host (dest switch)
					path, err = n.find_relaxed_path(ssw, h1, dsw, h2)
				}

				if err != nil {
					net_sheep.Baa(1, "find_paths: find_relaxed failed: %s", err)
				}
			} else {
				if find_all { // find all possible paths not just shortest
					path, err = n.find_all_paths(ssw, h1, h2, usr, commence, conclude, inc_cap, fence.Get_limit_max()) // find a 'scramble' path
					if err != nil {
						net_sheep.Baa(1, "find_paths: find_all failed: %s", err)
					}
				} else {
					path, cap_trip = n.find_shortest_path(ssw, h1, h2, usr, commence, conclude, inc_cap, fence.Get_limit_max())
					if cap_trip {
						lcap_trip = true
					}
				}
			}

			if path != nil {
				path.Set_extip(extip, ext_flag)
				path_list[plidx] = path
				plidx++
			}
		}

		swidx++
	}

	pcount = plidx // shouldn't get here, but safety first
	cap_trip = lcap_trip
	return
}